KB1SUB
Active2x3District 1
Competitive callsign — 1 application filed with the FCC.
License HolderMazzei, Kevin P
License ClassAmateur Extra
Min. Class RequiredTechnician
LocationKaty, TX
Grant DateMay 21, 2019
Expiration DateJul 28, 2029
KB1SUB is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by Mazzei, Kevin P in Katy, TX. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by Clarke, William H on Feb 22, 2008. KB1SUB has 9 recorded FCC license history events.
CW & Voice Analysis
Morse Code
-.- -... .---- ... ..- -...
CW Weight: 40 units(Moderate)
Voice Phonetics
Kilo Bravo One Sierra Uniform Bravo
Readability: 6.5/10(Good readability)
License History
- Administrative Update AppliedJul 22, 2025
- License RenewedMay 21, 2019
- Administrative Update AppliedFeb 3, 2016
- Administrative Update AppliedMay 21, 2013
- Administrative Update AppliedJan 21, 2012
- Administrative Update AppliedJul 9, 2011
- License ModifiedAug 27, 2009
- System-Generated GrantJul 28, 2009
- License IssuedJul 28, 2009
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
- Clarke, William HFiled Feb 22, 2008DismissedFCC ↗